Abstract
It is established that beryllian indialite (ideal formula Mg2BeAl2Si6O18) is formed spontaneously under oxidizing conditions in a wide range of relatively high cooling rates at small overheatings of its own melt and short overheating times. The significant difference in the growth rates of the prism and pinacoid faces of beryllian indialite from its own melt (0.08 and 0.40 mm/h, respectively) obtained by the Steber method is explained by the fact that the prism grows according to the tangential mechanism, while the pinacoid grows in the normal way. The face effect in these crystals manifests itself in the enrichment of the prism with beryllium and silicon as opposed to pinacoid.
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Original Russian Text © M.A. Mikhaĭlov, T.V. Demina, 2010, published in Kristallografiya, 2010, Vol. 55, No. 4, pp. 741–748.
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Mikhaĭlov, M.A., Demina, T.V. Crystallization of beryllian indialite from its own melt under oxidizing conditions. Crystallogr. Rep. 55, 695–702 (2010). https://doi.org/10.1134/S1063774510040279
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DOI: https://doi.org/10.1134/S1063774510040279